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The difference is the relay operation.Normally opened or normally closed.If you add an external spdt relay,you could have a humidistat/dehumidistat.

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2012-01-08 22:14:44
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Q: What What is the difference between a humidistat and a dehumidistat?
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What setting should a humidistat be set to?

My dehumidistat says to set the temperature to 70 degrees.

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A humidistat senses humidity, thermostat temperature.

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